在发达国家汽车是作为比较实用的交通工具成为每个家庭生活中不可或缺的一部分因此每个家庭的汽车拥有量相对较多这就为二手车的市场提供了大量的车源。有美国学者 Fajardo RCarmona J1在《Most People Buying Used Cars》指出更多人更愿意购买二手车而不是新车。Richard JSchonberger2在《The Utility of Buyingan Old Car》

In developed countries, cars are an essential part of every household as they are considered a practical means of transportation. Consequently, the number of cars owned by each household is relatively high, providing a large supply of vehicles for the used car market. Research conducted by Fajardo R. and Carmona J. in "Most People Buying Used Cars" found that more people are willing to purchase used cars rather than brand new ones. Furthermore, Richard J. Schonberger's "The Utility of Buying an Old Car" suggests that the cost of purchasing a used car decreases as the vehicle ages, with cars older than three years being particularly cost-effective. James L. Ginter, Murray A. Young, and Peter R. Dickson's study in "A Market Efficiency Study of Used Car Reliability and Prices" showed that depreciation and performance are independent factors, raising a series of policy issues related to the information efficiency of the used car market